Search the ESA Ebauches data sheet pdfs that are readily available on the internet. In essence the entire rear plate (along with all of its components, resonator, coil units etc) is interchangeable between the 9162 and 9164 (so is not stamped).
ESA9162 ESA9164 F300Hz Watch Movement Day & Date Indicator Disk Dial (ref P189)
All of them are for use only on F300Hz watches that have the. Each part is shown from both sides on contrasting paper to show close details and condition. You will receive 1 disk only (unless otherwise stated).